2010 PONTIAC G5 service indicator

When the Light Flashes First and Then is
On Steady
This indicates that there may be a problem with the Tire
Pressure Monitor System. The light flashes for about
a minute and stays on steady for the remainder of
the ignition cycle. This sequence repeats with every
ignition cycle. SeeTire Pressure Monitor Operation
on page 6-58 for more information.
Malfunction Indicator Lamp
Check Engine Light
A computer system called OBD II (On-Board
Diagnostics-Second Generation) monitors operation
of the fuel, ignition, and emission control systems.
It ensures that emissions are at acceptable levels
for the life of the vehicle, helping to produce a cleaner
environment.
This light should come on
when the ignition is on, but
the engine is not running,
as a check to show it
is working. If it does not,
have the vehicle serviced
by your dealer/retailer. If the check engine light comes on and stays on, while
the engine is running, this indicates that there is an
OBD II problem and service is required.
Malfunctions often are indicated by the system before
any problem is apparent. Being aware of the light
can prevent more serious damage to the vehicle.
This system assists the service technician in correctly
diagnosing any malfunction.
Notice:
If the vehicle is continually driven with
this light on, after a while, the emission controls
might not work as well, the vehicle’s fuel economy
might not be as good, and the engine might not
run as smoothly. This could lead to costly repairs
that might not be covered by the vehicle warranty.
Notice: Modications made to the engine,
transmission, exhaust, intake, or fuel system
of the vehicle or the replacement of the original tires
with other than those of the same Tire Performance
Criteria (TPC) can affect the vehicle’s emission
controls and can cause this light to come on.
Modications to these systems could lead to
costly repairs not covered by the vehicle warranty.
This could also result in a failure to pass a required
Emission Inspection/Maintenance test. See
Accessories and Modifications on page 6-3 .
4-30

Oil Pressure Light
{WARNING:
Do not keep driving if the oil pressure is low.
The engine can become so hot that it catches fire.
Someone could be burned. Check the oil as soon
as possible and have the vehicle serviced.
Notice: Lack of proper engine oil maintenance
can damage the engine. The repairs would not be
covered by the vehicle warranty. Always follow
the maintenance schedule in this manual for
changing engine oil. This light comes on briefly while starting the engine.
If it does not, have the vehicle serviced by your
dealer/retailer. If the system is working normally
the indicator light then goes off.
If the light comes on and stays on, it means that oil is
not flowing through the engine properly. The vehicle
could be low on oil and it might have some other system
problem.
Security Light
For information regarding
this light and the vehicle’s
security system, see
Content Theft-Deterrent
on page 3-15.
4-33

COOLING MODE ON
This message may display on some vehicles. Under
severe conditions, hot ambient temperatures, steep
grades, and towing, your vehicle may experience more
transmission shifting. This is temporary and normal
under these conditions. This does not require engine
or transmission service.
CRUISE ENGAGED
This message displays when the cruise control system
is active. SeeCruise Control on page 4-7 for more
information.
DOOR AJAR
This message displays if one or more of the vehicle’s
doors are open. Make sure that the door(s) are
closed completely.
ENGINE DISABLED
This message displays if the starting of the engine
is disabled. Have your vehicle serviced by your
dealer/retailer immediately.
ENG (Engine) PWR (Power) REDUCED
This message displays to inform you that the vehicle has
reduced engine power to avoid damaging the engine.
Reduced engine power can affect the vehicle’s ability
to accelerate. If this message is on, but there is no
reduction in performance, proceed to your destination.
The performance may be reduced the next time the
vehicle is driven. The vehicle may be driven at a reduced
speed while this message is on, but acceleration and
speed may be reduced. Anytime this message stays on,
the vehicle should be taken to your dealer/retailer for
service as soon as possible.
ESC (Electronic Stability Control) ACTIVE
If your vehicle has Electronic Stability Control (ESC),
this message displays and the ESC/TCS light on the
instrument panel cluster flashes when ESC is assisting
you with directional control of the vehicle. You may feel
or hear the system working and see this message
displayed in the DIC. Slippery road conditions may exist
when this message is displayed, so adjust your driving
accordingly. This message may stay on for a few
seconds after ESC stops assisting you with directional
control of the vehicle. This is normal when the system
is operating. See Electronic Stability Control (ESC) on
page 5-6 andElectronic Stability Control (ESC)/Traction
Control System (TCS) Indicator/Warning Light on
page 4-28 for more information.
4-39

LOW TRACTION
If your vehicle has the Enhanced Traction System (ETS)
or Traction Control System (TCS), this message displays
and the ETS light or the ESC/TCS light on the instrument
panel cluster flashes when the system is actively limiting
wheel spin. Slippery road conditions may exist if this
message is displayed, so adjust your driving accordingly.
This message stays on for a few seconds after the
system stops limiting wheel spin. SeeEnhanced Traction
System (ETS) on page 5-11 orTraction Control System
(TCS) on page 5-8 andEnhanced Traction System (ETS)
Indicator/Warning Light on page 4-27 orElectronic
Stability Control (ESC)/Traction Control System (TCS)
Indicator/Warning Light on page 4-28 for more
information.
PARKING BRAKE
This message displays if the parking brake is left
engaged. See Parking Brake on page 3-29 for more
information.
POWER STEERING
This message displays if a problem has been detected
with the electric power steering. Have your vehicle
serviced by your dealer/retailer immediately.
SERVICE AIR BAG
This message displays when there is a problem with
the airbag system. Have your vehicle serviced by your
dealer/retailer immediately.
SERVICE ESC (ELECTRONIC STABILITY
CONTROL)
If your vehicle has Electronic Stability Control (ESC), this
message displays and a chime sounds if there has been
a problem detected with ESC. The ESC/TCS light also
appears on the instrument panel cluster. This light stays
on solid as long as the detected problem remains
present. When this message displays, the system is not
working. Adjust your driving accordingly. See Electronic
Stability Control (ESC) on page 5-6 andElectronic
Stability Control (ESC)/Traction Control System (TCS)
Indicator/Warning Light on page 4-28 for more
information.
If this message turns on while you are driving, pull off the
road as soon as possible and stop carefully. Try resetting
the system by turning the ignition off and then back on.
If this message still stays on or turns back on again while
you are driving, your vehicle needs service. Have the
ESC inspected by your dealer/retailer as soon as
possible.
4-41

SERVICE TRACTION
If your vehicle has the Enhanced Traction System (ETS)
or Traction Control System (TCS), this message displays
and a chime sounds when the system is not functioning
properly. The ETS light or the ESC/TCS light also
appears on the instrument panel cluster. This light stays
on solid as long as the detected problem remains
present. When this message displays, the system is not
working. Adjust your driving accordingly. SeeEnhanced
Traction System (ETS) on page 5-11 orTraction Control
System (TCS) on page 5-8 andEnhanced Traction
System (ETS) Indicator/Warning Light on page 4-27
or Electronic Stability Control (ESC)/Traction Control
System (TCS) Indicator/Warning Light on page 4-28
for more information. Have the system serviced by
your dealer/retailer as soon as possible.
SVC (Service) TIRE MONITOR
If your vehicle is equipped with a Tire Pressure
Monitoring System (TPMS), this message displays
if a part on the TPMS is not working properly. The tire
pressure light also flashes and then remains on during
the same ignition cycle. See Tire Pressure Light on
page 4-29. Several conditions may cause this message
to appear. See Tire Pressure Monitor Operation on
page 6-58 for more information. If the warning comes on
and stays on, there may be a problem with the TPMS.
See your dealer/retailer.
TIRE LEARN ON
If your vehicle is equipped with a Tire Pressure
Monitoring System (TPMS) and does not have the
Remote Keyless Entry (RKE) system, this message
displays when the TPMS is re-learning the tire positions
on your vehicle. The tire positions must be re-learned
after rotating the tires or after replacing a tire or sensor.
See Tire Inspection and Rotation on page 6-62 ,
Tire Pressure Monitor System on page 6-56 , and
Ination - Tire Pressure on page 6-55 for more
information.
TIRE LOW ADD AIR
If your vehicle is equipped with a Tire Pressure
Monitoring System (TPMS), this message displays when
the pressure in one or more of the vehicle’s tires is low.
The low tire pressure warning light will also come on.
See Tire Pressure Light on page 4-29 . If a tire pressure
message appears on the DIC, stop as soon as you can.
Have the tire pressures checked and set to those shown
on the Tire Loading Information label. See Tires on
page 6-48, Loading the Vehicle on page 5-24 , and
Ination - Tire Pressure on page 6-55 . The DIC also
shows the tire pressure values. See DIC Operation
and Displays on page 4-36 .
4-42

Electronic Stability Control (ESC)
The vehicle may have an Electronic Stability Control
(ESC) system which combines antilock brake, and
traction and stability control systems that help the driver
maintain directional control of the vehicle in most
driving conditions.
When the vehicle is started and begins to move, the
system performs several diagnostic checks to ensure
there are no problems. The system may be heard or felt
while it is working. This is normal and does not mean
there is a problem with the vehicle. The system
should initialize before the vehicle reaches 20 mph
(32 km/h).
If the system fails to turn on or activate, the ESC/TCS
light comes on, and the ESC OFF and/or SERVICE ESC
message displays.
For more information, seeDriver Information Center
(DIC) on page 4-35 andElectronic Stability Control
(ESC)/Traction Control System (TCS) Indicator/Warning
Light on page 4-28. This light flashes on the
instrument panel cluster
when the ESC system
is on and activated.
ESC activates when the computer senses a discrepancy
between the intended path and the direction the vehicle
is actually travelling. ESC selectively applies braking
pressure at any one of the vehicle’s brakes to help steer
the vehicle in the direction which you are steering.
When the system activates, an ESC ACTIVE message
displays on the Driver Information Center. See DIC
Warnings and Messages on page 4-38 . This light also
flashes on the instrument panel cluster when the
ESC system is on and activated. A noise may be heard
or a vibration felt in the brake pedal. This is normal.
Continue to steer the vehicle in the intended direction.
5-6

It is recommended that the system remain on for normal
driving conditions, but it may be necessary to turn the
system off if the vehicle is stuck in sand, mud, ice
or snow, and you want to “rock” the vehicle to attempt
to free it. It may also be necessary to turn off the system
when driving in extreme off-road conditions where
high wheel spin is required. SeeIf Your Vehicle is Stuck
in Sand, Mud, Ice, or Snow on page 5-23 .
ESC may also turn off automatically if it determines that a
problem exists with the system. The ESC OFF and
SERVICE ESC messages and the ESC/TCS light comes
on to warn the driver that ESC is disabled and requires
service. If the problem does not clear after restarting the
vehicle, see your dealer/retailer for service. See DIC
Warnings and Messages on page 4-38 for more
information.
Adding non-dealer/non-retailer accessories can affect
the vehicle’s performance. See Accessories and
Modications on page 6-3 for more information.Traction Control System (TCS)
The vehicle may have a Traction Control System (TCS)
that limits wheel spin. This is especially useful in slippery
road conditions. The system operates only if it senses
that the front wheels are spinning too much or are
beginning to lose traction. When this happens, the
system works the front brakes and reduces engine power
by closing the throttle and managing engine spark to limit
wheel spin.
This light flashes while the
traction control system is
limiting wheel spin.
The system may be heard or felt while it is working.
This is normal and does not mean there is a problem
with the vehicle.
See Electronic Stability Control (ESC)/Traction Control
System (TCS) Indicator/Warning Light on page 4-28
for more information.
5-8

If the ETS indicator/warning light comes on and stays on
for an extended period of time when the transmission
shift lever is in any position other than L (Low), the
vehicle may need service.
When this light is on solid, the system will not limit
wheel spin. Adjust your driving accordingly.
Check the DIC messaging to determine whether it is
because of the driver turning off the system, or that the
system may not be working properly and the vehicle
requires service. When this light is turned on, either the
SERVICE TRACTION or TRACTION OFF message
will be displayed.
SeeDIC Warnings and Messages on page 4-38 for
more information on the messages associated with
this light.
To limit wheel spin, especially in slippery road
conditions, ETS should always be left on. But the
system can be turned off if needed. To turn the system off, shift to L (Low) or R (Reverse).
When the system is turned off, the ETS indicator/warning
light will come on and stay on and the TRACTION OFF
message will be displayed when the gear shift is in
L (Low). The indicator/warning light and message will not
come on when the gear shift is in R (Reverse). If the ETS
is limiting wheel spin when the transmission is shifted to
L (Low) or R (Reverse) to turn the system off, the
indicator/warning light and TRACTION OFF will come on
in L (Low). But the system will not turn off right away.
It will wait until there is no longer a current need to limit
wheel spin. See
DIC Warnings and Messages on
page 4-38 for more information on the messages
associated with this light.
The system can be turned back on at any time by
shifting to D (Automatic Overdrive) or I (Intermediate).
The ETS indicator/warning light should go off.
Adding non-dealer/non-retailer accessories can affect
the vehicle’s performance. See Accessories and
Modications on page 6-3 for more information.
5-12